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Merge pull request chengkehan#12 from chengkehan/v0.2.2p3

Compatible with unity5.6

Merge branch 'v0.2.2p2'

Merge pull request chengkehan#6 from chengkehan/v0.2.2p1

Resample demo animations to make it available.

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Merge branch 'v0.2.1p2'

Merge branch 'v0.2.1-dev'

Merge branch 'v0.2.1p1'

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